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FANUC Alarm SRIO-004 — WARN SERIAL PORT NOT INITIALIZE

FANUC SRIO-004 (“WARN SERIAL PORT NOT INITIALIZE”): Serial port is not initialized. First check: Initialize the serial port before using it.

Updated 2026-08-29 · LogrobotLM reference

Description

Serial port is not initialized.

Remedy · Remède

Initialize the serial port before using it.

Frequently asked · Questions fréquentes

What does FANUC alarm SRIO-004 mean?
FANUC SRIO-004 (“WARN SERIAL PORT NOT INITIALIZE”): Serial port is not initialized.
How do you troubleshoot FANUC alarm SRIO-004?
Initialize the serial port before using it.

Related codes / Codes liés

SRIO-002WARN SERIAL PORT NOT OPENSRIO-003WARN SERIAL PORT ALREADY OPENSRIO-005WARN SERIAL PORT DSR OFFSRIO-006WARN SERIAL PORT PARITY ERROR

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →